#nav{
    width: 318px;
    background: whitesmoke;
}
.title{
    font-size: 18px;
    font-weight: bold;
    text-indent: 1em;
    line-height: 35px;
    background: red;
}
/*ul li*/
/**
list-style:
none 去掉原点
circle 空心圆
decimal 数字
square 正方形
 */

ul li{
    font-size: 20px;
    height: 40px;
    list-style: none;
    text-indent: 1em;

}
a{
    text-decoration: none; /*去下划线*/
    font-size: 20px;
    color: cornflowerblue;
}
a:hover{
    color: orange;
    text-decoration: underline;
}